Nozzle



NOZZLE J Filed June 30, 1939 Patentedl Nov.` 18,' 1,941

p v John J.m1ey,.chicagof-111. Application Junerso; 1939, seriamo. 282.003.

` .Y 2' Claims. vThis. invention relates to `improvements in liquid discharging nozzles particularly adaptable for re fighting purposes, and refers speciiically i to a nozzle construction which effectively reduces a liquid lstreamflowing' under pressure to a fog- `lkefstate and yet permits said stream offog-like globules rto be projected over la relatively' great distance. j y y In righting chemical fires, that is, lburning gasolinejalcohol .or other `highly iniiammable materials, the most effective procedure `involves.

the smothering of` theiire. :Ai'solidstre'am of water as such isineffective 'sinceit merely splashes `or spreads `the burning materials,` which, nevertheless, continueto burn: Nozzles havehereto` fore been proposed which reducea` hose stream` to fog-like globules; which,1un1ike.1 a solid stream,

do not reachthe burning materials' with sufficient velocity and momentum tosplash or spread the same, but merely establishesaA fog-like atmos-` phere in the vicinity of the burning materials which smothers the .fiame. y zles are only partially effective since they necessitate that the fire iighters approach the flaming materials veryclosely, whic'hLis sometimes impossible because of the heat and is falways dangerous t v :i

My present invention` comprises a nozzle vwhich eiectively atomizes the hosexstream' and yet permits the operators'to` stand .atl a convenient and' safe distance-from the re. The degree of atomization produced is suiiicient to; smother the mostr persistent iire, but the hose stream is so broken up that the globules 'will travel agreater dis-` tance than heretoforepossible.`

. The objects and advantages of" my.` invention will be apparent from the.y accompanying` drawing and following. detailed description. I"

In the drawing, Fig. 1 is a longitudinal sectionalview of my improved nozzle,

' Fig. 2 is an end view of said nozzle. Fig. Bis a, transverse sectional view of the nozzle taken on line 3 3 of Fig. 1. I

Fig. 4 is a detail elevational View of the atomizing member, viewed in a position at right angles to that shownin Fig. I; z

Fig. 5 is a longitudinal sectional view of a slight modication of my invention.

Referring in' detail to the drawing, 'I indicates a cylindrical housing which terminates at one end in a fitting 2 provided with internal threads 3. A rib 4is disposed diametrically across the opposite end of the fitting, the central portion of the rib being enlarged, as at 5, and being provided However, such nozcylinder I "The external `surface joff' the cylinder' I is threadedglpreferably carrying square .threads 1. The endiof thecylinder I adjacent 'the rib '4. carries screw threads 8,the purpose of which will be hereinafter more fully described;

A ring 9 is adapted to embracefthe housing .I, said ring carrying internal threads `'IIJ-adapted for engagement` with threads 'LfV Theri'ngl!` terminates `at onelend in: an inwardly offset annular flange I I `which is externally threaded,\=as1at I2.` Rotary ,movement of ring S!'causes,by"vi'rtue` of the engaging screwthreads 1r and Ill,V relative axialv movement of the ring gwithrespect to the'housingl.` -I.

An outer housing I3` al'soembra'ces the inner housing-I andfadjacent" one endlis providedfwith screw threads adapted for engagementifwith' the threads I2 whereby housing I3 maybe detachably secured to ringS; The oppositeend 1ofth'e house ing I3 is tapered inwardly in aconical manner as shown at I4 in Fig. 1, and the endof the housing is provided' with `a circular aperture I5.` intermediate `portion of the outer housing I3' 'carries 'circularly spaced projections `IIS 'provided for M the convenient removal of .the housing from 'the ring 9. Adjacent theba'se of the `taperedportion` I4`, circularly spaced' proj eotioris` arecarried for convenientlyrotatinghousing I3 and ring 9 with respectto the innerhousing l.

An internally threaded ri'ngI8` is adapted for' engagement withscre'w threads '8 and an annular member I9 ofangle'cross-section seats upon sai-d ring. A threaded collar. 2li` also engages threads It'` and functions .to'rse'cure the member I9 .in seated position. vA lubricant (not shown) may, if desired, be contained inthe space2l be- `tween the inner and` outer .housings and the' `member-l9 serves to `sealthe `lubricant, if used,

in position andalsoLtokeepywater'and dirt fromr entering the space 2I.

A rod-likemember 22 is provided with screw threads 23 adjacent one end, and is adapted to be secured in aperture 6 by means of nut 24, the threaded end of the member being restricted in diameter providing a shoulder 25 which abuts the central portion 5 of rib #when the nut 24 is drawn tight.

Intermediate the length of the member 22 a disc 26 is carried, saiddisc being slightly smaller in diameter than aperture I5 wherebysaid disc" may be drawn through said aperture when the outer housing is rotated with respect to the inner housing.

In operation, tting 2 is connected to a mating with an aperture 6 disposed coaxially with the 55 tting carried upon a iiexible fire hose (not cation of my invention is illustrated.

shown). Water under relatively high pressure is discharged into the interior of tting I and is projected through aperture I5. When an umbrella type of spray is desired the disc 26 is positioned as shown in Fig. 1, and the water is discharged as a fine spray or fog through the annular opening 21. This setting of my device produces a line fog-like spray which covers considerable area but lacks appreciable projected distance. In this regard it resembles nozzles heretofore used, If, however, a spray form of this type is desired, it can be obtained with my device.

At the outer end of the member 22 a head 28 is formed and comprises a grating consisting of a plurality of plates 29 disposed in spaced plane parallel relationship, said plates being positioned along lines corresponding to cords of a circle dened by the ends of the plates. 'Ihe diameter of the circle thus formed is substantially equal to the diameter of the disc 26, wherebyV rotation ofthe outer housing I3 with respect to the inner housing I causes the tapered end of the outer housing to embrace the head 28.*

In operation, when it is desired to use head 28, the same is positioned Within the tapered portion ofthe housing I3 with the top of the plates substantiallylush with the lower edge of the aperture I5. In this'position the water passing through the housings is broken `up into a-plurality of vparallel sheets projected outwardly parallel .to the axis of the nozzle. In this manner the thin sheets of water can be projected a greater distance than is possible where the water is deflected at an angle to its passage through the nozzle. Ofcourse, the air resistanceencountered by the sheets of Water eventually break up the sheets into fog-like globules which elciently function toA smother a 'lre at considerable distance from the nozzle.

. By, moving the head outwardly relative to the position thereof hereinbefore described, the spray is widened with a corresponding l'oss in projected distance. However, theprojected distance of the spray is greater than is possible to obtain utilizing the disc type of deilector.

Referring particularly to Fig. 5, a slight modi- In this form of my invention a single cylindrical housing 30 is provided at one end with a fitting 3l which is internally threaded as at 32. The housing 30 is adapted to be carried upon the end of a pipe (not'shown) preferably an L-shaped pipe whereby the housing may be inserted through a hole in a floor, ceiling or wall and the pipe rotated to smother a re the exact location of which is not known.

The housing 30 carries a diametrically extending rib 33 which is enlarged at its central portion wherein a threaded aperture 34 is provided. A rod-like member 35 terminates at one end in a threaded shank 36 which is adapted to threadedly engage in aperture 34. A lock nut 3l is engaged upon the end of shank 36 and functions to lock shank 36 in desired position. The end of shank 36 is provided with a slot 38 whereby said shank may be conveniently turned to raise or lower the member 35 before the lock nut is drawn tight.

The head 39 of the member 35 is similar to head 28 and is provided with a plurality of spaced parallel plates 40, the ends of which define a circle slightly lesser in diameter than aperture 4I provided in the end of housing 30. The position of head 39 with respect to aperture 4I is, of course, adjustable, but due to the nature of the use to which this form of my invention is adapted, an adjustment, once made, is usually retained permanent. The nature of the spray produced by the head 39 is similarto that hereinbefore described in conjunction with head 28.

I claim as my invention:

1. A liquid discharge nozzle comprising a substantially cylindrical housing', said housing 'being provided with an inlet and discharge openings at opposite ends thereof, a member mounted in said housing, means for axially adjusting said member to predetermined positions within said housing, a plurality of spaced substantially parallel plates carried at one end of said member adjacent the outlet opening, said plates being disposed with their planes substantially parallel to the axes of the housing and adapted to divide a liquid stream passing through said housing and discharged therefrom into a plurality of substantially parallel spaced sheets of liquid.

2.v A liquid discharge nozzle comprising in com'- bination an inner substantially cylindrical housing and an outer substantially cylindrical housing embracing sai-d inner housing, said inner housing being provided with an inlet opening for liquid,

and said outer housing beingprovided with a discharge opening for liquid, said openings being in substantially axial alignment, a member mounted upon said inner housing within said' outer housing, a plurality of spaced substantially parallel plates carried at one end of sai-d member adjacent the discharge opening/said plates being disposed with their planes substantially parallel to the axes of said housings, means for telescopically moving said inner and outer housing relative to each other to adjustably position said plates within said outer housing adjacent the discharge openingwhereby to divi-de a liquid stream passingv through the housings and discharged therefrom into a plurality of substantially parallel spaced sheets of liquid.

` JOHN J. RILEY. 

